according to these extra moving parts, there is also engine moving flap just like stock phoenix had, by using this extra feature we could make use of it in case muscle cars with blower type hood like dodge charger...

All I can say is, This is Fantastic, I am not sure what else this mod could use, oh, how about a step by step guide on how to make cars compatible for use on this mod.
5/5 or / you choose!!
Edit: After trying to make one of my mods compatible I found that it wont load a file with more than 8 Carcols in it why is this and can the limit be heightened for a future version.

do you forget about Rhino weapon, when we add a tank as a vehicle, it don't fire & not rotating its cannon, where to put the animation if we want to attach a new anim to our bike, in gta3.img or we cam't add & have to link the present one, i think you should wait for 1 or 2 days, then collect the correction & release an update if you want your mod to become UNBEATABLE, , GOOD LUCK

Predator weapons and Predator AI are currently under the same flag. And you can't add multiple AI flags to one vehicle because then only one of them would really work since it cannot do multiple AIs for one vehicle (it determines the AI "type" for each vehicle using those flags).